Ingemar,

Are you speaking of a standard, single print of gold which has been
co-fired into the body of the part, or possibly of a stack of inks which
has been co-fired in at one time?  

XRF comes to mind, but it will require special 'standards', and the prep
of the standards would result in the destruction of a sample of parts to
construct them ... and even then I am not sure how successful you will
be.

It sounds as though a simple profilometer won't get you what you desire
- especially since the bulk of the conductor is below the surface.  I
occasionally did internal inspection of LTCC parts back in the olden
days - but that was looking more for omissions and commissions.

I believe that acoustically, with a very high frequency transducer you
should be able to gate off the top and bottom surface of the conductor.
The margin of error [due to surface imperfections] may be quite large,
however.  

Can you get them to tell you what their stencil thickness was and based
on solids content have some idea what you may have ended up with?

Will ponder further

Steve
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Hernefjord Ingemar
Sent: Thursday, March 29, 2007 9:39 AM
To: [log in to unmask]
Subject: [TN] Cofired gold

 
Trikeman or other gnu,

Anyone know of a non destructive method to check cofired topgold
thickness (Au over LTCC)?

Inge



THE INFORMATION CONTAINED IN THIS E-MAIL MESSAGE AND ANY ATTACHMENTS SENT FROM GENTEX CORPORATION IS GENTEX CONFIDENTIAL INFORMATION INTENDED ONLY FOR THE PERSONAL USE OF THE INDIVIDUAL OR ENTITY NAMED ABOVE. If you are not the intended recipient, you are hereby notified that any review, distribution, or copying of this communication is strictly prohibited.  If you have received this communication in error, please immediately notify the sender by return e-mail, and delete this e-mail message and any attachments from your computer.  




---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------